Sanchar Saathi Portal
Also known as: Sanchar Saathi, DoT portal, sancharsaathi.gov.in
A free Government of India portal where you can see every mobile number registered against your Aadhaar and disconnect any you do not recognize.
Sanchar Saathi is a portal run by the Department of Telecommunications (DoT), Government of India. After logging in with your mobile number and OTP, the portal shows you every active mobile connection registered against your Aadhaar. If you see numbers you did not request — common after Aadhaar data leaks — you can flag and disconnect them directly through the same portal.
The portal also operates the CEIR (Central Equipment Identity Register) service for tracking and blocking stolen or lost mobile devices by IMEI, and the Chakshu service for reporting suspected fraud calls and messages.
For Indian residents, Sanchar Saathi is the single most underused official tool. Combined with Aadhaar Lock in the mAadhaar app, it closes the SIM-swap-to-OTP-fraud chain that drives most banking account takeovers in India. Both services are free, official, and take less than 10 minutes to use.